Could not find a version that satisfies the requirement

[sohmee]

I installed Python 3.6 in windows 10 as per instructions but I am getting an error, Could not find a version that satisfies the requirement. please help, thanks

pip install -r requirements.txt
Collecting alabaster==0.7.10 (from -r requirements.txt (line 1))
Using cached https://files.pythonhosted.org/packages/2e/c3/9b7dcd8548cf2c00531763ba154e524af575e8f36701bacfe5bcadc67440/alabaster-0.7.10-py2.py3-none-any.whl
Collecting anaconda-client==1.6.5 (from -r requirements.txt (line 2))
Could not find a version that satisfies the requirement anaconda-client==1.6.5 (from -r requirements.txt (line 2)) (from versions: 1.1.1, 1.2.2)
No matching distribution found for anaconda-client==1.6.5 (from -r requirements.txt (line 2))